I build apps that move money — and I work on what goes wrong in them: the response that gets lost, the process the OS kills mid-flight, the device with no network, the clock that is off.

Six years shipping to production across fintech, banking, streaming and travel. The last two and a half in regulated financial journeys: Pix, POS, boletos, statements.

• Flutter and Dart — modular architecture by domain, offline-first, testing
• Native modules in Swift and Kotlin through platform channels — biometrics, cryptography, camera, POS peripherals
• Correctness under partial failure — idempotency, send queues, conflict resolution, reconciliation
• Production support of financial flows — logs, incident analysis, fixing journeys people depend on

I also work with .NET / ASP.NET Core, React / TypeScript and Azure when the product calls for it.

Most of my work over the last four years is private, in regulated financial systems. The contribution graph is real; the repositories behind it are not mine to open.